Install replacing previous Linux installation: what partition to choose

Let’s try another source of information:


I don’t see why not.


/dev/nvme0n1 is likely set to be the boot drive in BIOS. You may need to change its settings in order to boot on the order drive.
And delete the old EFI partition, since it won’t be useful.


The EFI partition serves as the boot record in UEFI mode: Unified Extensible Firmware Interface - ArchWiki


It’s “manual” as in “make your own partitioning”. It’s still graphical.